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M-PETEH, PHOTO-LITHOGRAPHE?, WASHINGTON. 'DTC i eting on the knives onto cutter-barsby the use in rapidly closing up these parts While per- `and it is well known that any defect in so es- UNITED STATES PATENT OFFICE,

SAMUEL L. BOWER, OF AUBURN, NEW YORK.

`IMPROVEMENT IN DEVICES FOR RIVETING.

Specification forming part of Letters Patent No. 105,897, dated August 2, 1870.

Toall 'whom it may concern:

Be it known that I, S. L. BOWER, of the city of Auburn, in Cayuga county, New York, have invented certain improvements in riveting knives onto the cutter-bars used in mowing and reaping machines, ot' which the following is a specification.

e My invention relates to t he manner of rivof a spring or its equivalent, precedingthe riveting-tool, for the purpose ot' bringing the head of the rivet irrnly against the side of the cutter-bar, andby the same operation pressing the knife onto the opposite side of said bar, whereby the joint between the cutter-bar and knife is closed up. Heretofore great dit'- iculty has been experienced by the operator forming thework of riveting on the knives,

sential a part of a machine of this kind renders italmost worthless.

Figure I is a vertical cross section of the slide used in machines for riveting, showing the heading-tool, spring, andsocket through which the tool passes. Fig. 2 shows the slide with all the parts together when in operation. Fig. 3 is a table forming apart of the rivetingmachine on which the work is placed when being performed.

In Fig. l, G is the back edge of the knife, shown resting upon a portion ot' the cutterbar D, having two rivets passing through both the cutter bar and the knife, one of whichthe rivet E-is headed or nished. rEhe rivet F is in the position to receive theblow of the riveting-tool A. The socket G is put through the spring B, and is prevented from sliding through the same by the shoulder H. A plan of the spring B is shown at I, having slots J and K in the ends, through which pass the bolts L and'M, which 'secure the said spring to the slide O.

Now, when the slide O is moved downward it carries with it the spring B, and the socket G, inserted into said spring,comesin contact with the knife, pressing it'down upon the cutterbar D, and by the same pressure the cutterbar is moved downward upon the rivet-head, whereby all the parts of the work are brought iirml y together before the riveting-tool spreads the rivet over the knife, as shown at the rivet E, which shows the work in the completed form.

I claim as my invention- In combination with the slide O and riveting-tool A, the spring B and socket G, arranged and operating substantially in the manner set forth.

SAMUEL L. BOWER.

Witnesses AVERY BABBETT, H. M. BABBETT. 

